SAMSUNG UN50F600 Panel short

[unimatrix93]

Hello all, I have a presumably SAMSUNG UN50F600 (sticker is gone from the backside and it was purchased used without box, so don't know the exact model number) with black screen issue.

I check the PSU/MB and both showing the correct voltages. Backlight working too.

On the T-CON, I measured:

VGL = 0.05V
VGH = 1V
VVD = 1.16V
VCOM = 0.6V

And If I disconnect the left side of the panel, I get white screen on the right side and the following values on the T-CON:

VGL = 12.5V
VGH = 30.5V
VVD = 15.6V
VCOM = 6.3V

So I narrowed down the problem on the left side of the panel.

I checked for short to ground the Panel PCB, couldn't measure any on the caps. I still need to check the IC Q45F G1563, maybe it went protection mode?

Anyhow, do you guys any tips on trying to fix this problem?
I checked on YT and some videos suggested that I should isolate certain lines on the T-CON ribbon cable until the shorted side starts up again.

Thanks in advance!

[nomoresonys]

Re: SAMSUNG UN50F600 Panel short

tape cutoff method, where you try a piece of tape usually from the second pin from the end, maybe start with covering 2-9 pins then uncover one pin at a time from pin 9 towards pin 2 depending on where the short is, if one end gives no joy try the other side meaning you have left and right side of same cable: good video there where he found the exact pin that was shorted, guess it can be more than one pin shorted: https://www.youtube.com/watch?v=pfrRhw7-ZII

[unimatrix93]

Re: SAMSUNG UN50F600 Panel short

Thank you for the input and the link, I will try this tonight. Wish me luck.

[unimatrix93]

Re: SAMSUNG UN50F600 Panel short

Report:
I managed to get some moving white lines in the middle of the screen by masking it from pin 4 to pin 9. I will continue it tomorrow after I buy some transparent tape.